The best times to visit Sao Tome Island for ideal weather are
January 1st to December 30th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Sao Tome Island Travel Guide
Other Sao Tome Island Travel Info
Weather in Sao Tome Island
Average temperatures in Sao Tome Island vary very little. Considering humidity, temperatures feel hot all year with a very low chance of rain throughout the year. The area is less temperate than some — in the 34th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Sao Tome Island, the hottest months are March, April, and then February. See average monthly temperatures below. The warmest time of year is generally early to mid March where highs are regularly around 87.7°F (30.9°C) with temperatures rarely dropping below 75.2°F (24°C) at night.
Sao Tome Island Temperatures (Fahrenheit)
Sao Tome Island Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Sao Tome Island Perceived Temperature (F)
Sao Tome Island Perceived Temperature (C)
Average Sao Tome Island Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sao Tome Island are April, May, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late March with an average of 0 days of significant precipitation the week of March 26th.
When can you find snow in Sao Tome Island? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Sao Tome Island.
Snow on the Ground
The graph below shows the average snow on the ground in Sao Tome Island (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Sao Tome Island has some very humid months, and high humidity throughout the year. The least humid month is September (73.8% relative humidity), and the most humid month is November (79%).
Wind in Sao Tome Island is usually calm. The windiest month is June, followed by July and August. June’s average wind speed of around 10.1 knots (11.6 MPH or 18.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late June where average top sustained speeds reach 15.8 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Sao Tome Island.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||4.8||Light breeze||10.1||Gentle breeze|
|Feb||5.3||Light breeze||11.6||Significant breeze|
|Mar||6||Light breeze||13.3||Gentle breeze|
|Apr||6.2||Light breeze||12.9||Significant breeze|
|May||7.2||Gentle breeze||14||Gentle breeze|
|Jun||10.1||Gentle breeze||15.2||Significant breeze|
|Jul||9.4||Gentle breeze||14.8||Gentle breeze|
|Aug||7.5||Gentle breeze||13||Significant breeze|
|Sep||6.7||Light breeze||12.8||Gentle breeze|
|Oct||5.9||Light breeze||11.8||Significant breeze|
|Nov||6.2||Light breeze||12.6||Gentle breeze|
|Dec||5.2||Light breeze||10.8||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Sao Tome Island?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Portugal; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Sao Tome Island, Portugal is June, followed by October and January. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Sao Tome Island in August. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Sao Tome Island Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 87.3°F (30.7°C) and 84.8°F (29.3°C) with similar temperatures in the later months. Rain is extremely rare with 0 to 1 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is the second busiest season for tourism in Sao Tome Island, so lodging and other accommodations may cost slightly more.
Fall (September through November)
Fall daily highs range from 85°F (29.4°C) and 83.7°F (28.7°C), which will feel very nice given the humidity and wind. It rains or snows a trivial amount: approximately 0 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is perfect this time of year in Sao Tome Island to be enjoyable for warm weather travelers. The average high during this season is between 87.7°F (30.9°C) and 84.6°F (29.2°C). On average, it rains or snows a very small amount: 0 to 1 times per month. These times of year are the busiest with tourists.